Incandescent electric lamp



(No Model.)

W. E.'NIOKERSON. INGANDESGENT ELECTRIC LAMP.

Patented June 20, 1893.

UNITED STATES PATENT OFFICE.

\VILLIAM EMERY.NICKERSON, OF CAMBRIDGE, MASSACHUSETTS.

INCANDESCENT ELECTRIC LAMP.

SPECIFICATION forming part of Letters Patent No. 500,076, dated June 20,1893.

Application filed April 3, 1893. Serial No. 468,935. (No model.)

To all whom it may concern.-

Be it known that I, WILLIAM EMERY NICK- ERSON, of Cambridge, in thecounty of Middlesex and State of Massachusetts, have invented a new anduseful Improvement in Incandescent Electric Lamps, of which thefollowing, taken in connection with the accompanying drawing, is aspecification.

My invention relates to incandescent electric lamps of that class inwhich the neck of the lamp is closed and the leading-in wires supportedby a fusible cement plug.

It consists of a device by which the manufacture of the lamp isfacilitated.

In the accompanying drawing G is the glass bulb of an incandescentelectric lamp, H the filament attached at h h to the leading-in wires II.

J isa disk of mica or other suitable substance resting upon the shoulderK formed in the neck of the lamp globe and which serves as a support forthe leading-in wires I I and the cement plug L. The leading-in wires IIare provided at M with bends which serve to prevent them from droppingthrough the disk J during the manufacture of the lamp, and before thecement plug has been fixed. Instead of the bends, the wires may beflattened at this point, or a drop of solder may be attached to each ofthem.

I claim- In an incandescent electric lamp, the combination of the glassglobe G, disk J, cement plug L, filament H; with the leadingin wires I Ihaving the bends 11 1 adapted to support the said wires,'substantiallyas and for the purpose set forth.

In testimony whereof I have signed my name to this specification, in thepresence of two subscribing witnesses, on this 1st day of April, A. D.1893.

WVILLIAM EMERY NICKERSON.

WVitnesses:

FRANK G. PARKER, FRANK G. HATTIE.

